Greek 101 is in Yonkers, NY not far from the city
www.greek101.com
I've been in to ADGreek a few times...it's not the greatest, but depending on what you need done, it can suffice. If you are in Manhattan, there is a store at the South Street Seaport that does custom embroidery. One my Sisters' actual sister (does that make sense?) used them for tons of stuff. The place is called ABCDE Designs...